Yes, but only headings and normal text - we have templates that we have to use and so cannot do our own thing.
It is not just those areas though - one backspace, over a hidden code and the section break disappears and half your pages change size or orientation; a simple paste operation can cause heading numbers to go wrong throughout the document and sometimes can't be fixed (although it should be able to) without undoing the paste.
The latest one is some problem, but hidden in the codes that you cannot see, that allows a document to be read, edited and saved perfectly, but jumbles up section orders and fails when printed, yet importing into Libre Office allows it to be printed properly! Opening a new document and pasting in the contents of the old leaves the new document with the same problem. Pasting without formatting works, but I do not want to manually reformat a 300+ page document!